Aluminum slurry coatings to replace cadmium for aeronautic applications

Cadmium has been widely used as a coating to provide protection against galvanic corrosion for steels and for its natural lubricity on threaded applications. However, it is a toxic metal and a known carcinogenic agent, which is plated from an aqueous bath containing cyanide salts. For these reasons, the use of cadmium has been banned in Europe for most industrial applications. However, the aerospace industry is still exempt due to the stringent technical and safety requirements associated with aeronautical applications, as an acceptable replacement is yet to be found. Al slurry coatings have been developed as an alternative to replace cadmium coatings. The coatings were deposited on AISI 4340 steel and have been characterized by optical and electron microscopy. Testing included salt fog corrosion exposure, fluid corrosion exposure (immersion), humidity resistance, coating-substrate and paint-coating adhesion, electric conductivity, galvanic corrosion, embrittlement and fatigue. The results indicated that Al slurry coatings are an excellent alternative for Cd replacement.

Virtual Membrane Systems

Within the membrane computing research field, there are many papers about software simulations and a few about hardware implementations. In both cases, algorithms for implementing membrane systems in software and hardware that try to take advantages of massive parallelism are implemented. P-systems are parallel and non deterministic systems which simulate membranes behavior when processing information. This paper presents software techniques based on the proper utilization of virtual memory of a computer. There is a study of how much virtual memory is necessary to host a membrane model. This method improves performance in terms of time.

HAK transporters from Physcomitrella patens and Yarrowia lipolytica mediate sodium uptake

The widespread presence of Na+ specific uptake systems across plants and fungi is a controversial topic. In this study we identify two HAK genes, one in the moss Physcomitrella patens and the other in the yeast Yarrowia lipolytica, that encode Na+ specific transporters. Because HAK genes are numerous in plants and are duplicated in many fungi, our findings suggest that some HAK genes encode Na+ transporters and that Na+ might play physiological functions in plants and fungi more extensively than is currently thought.

Prematica, en que se declara y amplia, la en que se prohibio arrendar los oficios de escriuanos, receptorias, y procuradorias, y se mandó los siruiessen por sus personas, y tuuiessen de patrimonio y hazienda propia la tercia parte del valor del oficio.

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Prematica, en que se da la orden que se ha de tener en el traer de los lutos en estos reynos.

Capitulares grab. xil.

Pragmatica en que se prohibe el iuego que llaman los bueltos, y los que le iugaren, incurran en las penas puestas à los que iuegan los dados ; y ansi mismo la Pragmatica, para que los titulos de aquellos officios que son renunciables, se saquen ...

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Towards the Natural Optimization with Particle Swarm Optimization.

This paper shows the Particle Swarm Optimization algorithm with a Differential Evolution. Each candidate solution is sampled in the interval [?5, 5] D where D indicates the dimension of the search space, and the evolution is performed with a classical PSO algorithm and a classical DE/x/1 algorithm according to a random threshold. Moreover, this paper provides concepts to deal with non-linear optimization through the use of PSO.

The Optimal combination: Grammatical Swarm, Particle Swarm Optimization and Neural Networks.

Social behaviour is mainly based on swarm colonies, in which each individual shares its knowledge about the environment with other individuals to get optimal solutions. Such co-operative model differs from competitive models in the way that individuals die and are born by combining information of alive ones. This paper presents the particle swarm optimization with differential evolution algorithm in order to train a neural network instead the classic back propagation algorithm. The performance of a neural network for particular problems is critically dependant on the choice of the processing elements, the net architecture and the learning algorithm. This work is focused in the development of methods for the evolutionary design of artificial neural networks. This paper focuses in optimizing the topology and structure of connectivity for these networks.

Polynomial approximation using particle swarm optimization of lineal enhanced neural networks with no hidden layers.

This paper presents some ideas about a new neural network architecture that can be compared to a Taylor analysis when dealing with patterns. Such architecture is based on lineal activation functions with an axo-axonic architecture. A biological axo-axonic connection between two neurons is defined as the weight in a connection in given by the output of another third neuron. This idea can be implemented in the so called Enhanced Neural Networks in which two Multilayer Perceptrons are used; the first one will output the weights that the second MLP uses to computed the desired output. This kind of neural network has universal approximation properties even with lineal activation functions. There exists a clear difference between cooperative and competitive strategies. The former ones are based on the swarm colonies, in which all individuals share its knowledge about the goal in order to pass such information to other individuals to get optimum solution. The latter ones are based on genetic models, that is, individuals can die and new individuals are created combining information of alive one; or are based on molecular/celular behaviour passing information from one structure to another. A swarm-based model is applied to obtain the Neural Network, training the net with a Particle Swarm algorithm.

Pragmatica en que se sube el precio del pan, y se acrecienta[n] las penas contra los que lo vendieren a mas precio, y fueren terceros o lo mezclaren co[n] otras semillas o lo mojaren para vendello.

Contiene: Pragmatica de el acrecentamiento y tasa, de los portes del pan, A6

Capitulos generales de las Cortes de Madrid, que se començaron el año de mil y quinientos y ochenta y tres, y se fenecieron el de ochenta y cinco.

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Prematica, en que se prohibe, que los naturales destos reynos no anden en abito de romeros y peregrinos, y se da la orden que han de tener para yr à alguna romeria, y assi mesmo la que han de guardar los estrangeros que vinieren en romeria.

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Prematica, en que se prohibe el arrendarse los oficios de escriuanos de camara, y procuradorias, recetorias, y escriuanias del numero, y que à los tales oficios no sean admitidos al vso dellos, sino constare tener de propia hazienda y patrimonio ...

Sign.: []4

Capitulos generales de las Cortes del año de ochenta y seys, fenecidas y publicadas en el de nouenta.

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Cortes de Madrid, año de 79 : quaderno de las leyes y pragmaticas que su Magestad mando hazer en las Cortes que tuuo y celebro en la villa de Madrid, que se començaron el año passado de 1579 y se acabaron el de 1582.

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